Apparatus for pasteurizing liquids.



' ma. snvnsn. APPARATUS FDRPASTEURIZING LIQUIDS.

'(ppumion med Apr. I4, 1899.)

Patented lan.30, |900.

(nu ubdel.) 2 sheets-sheet l.

JTE/,M SUPPLY P/P 6764/1/ Escwpf P/pg 9M. @Ma

A TTOH/VEY No. 642Q535.

(No Mod'el.)

Patented lan. 30, |900.l D. R. SNYDER.

APPARATUS FOR PASTEURIZING 'LlUlDS.

(Application med A1154, 1899.)

2 Sheets-Sheet 2.;

EXHAUST PIPE /N VEN 70H SMM A TTOHNEY DANIEL R. SNYDER, OF STONERSVILLE,PENNSYLVANIA, ASSIGNOR OF TIIREE-,FOUR'IIIS TO IIOVARD E. AIIRENS ANDJAMES S. AIIRENS, OF READING, AND CHARLES M. RICHARDSON, OF BERNVILL. l,PENN- SYLVANIA APPARATUS FOR PASTEURIZING LIQUIDS.

SPECIFICATION forming part of Letters Patent No. 642,535, dated January30, 1900.

Application filed Apri14, 1899. Serial No. 711,720. (No model.)

To @ZZ whom. it may concern:

Be it known that I, DANIEL R. SNYDER, a citizen of the United States,residing at Stonersville, in the county of Berks and State of,

Pennsylvania, have invented certain new and useful Improvements inApparatus for Pasteuriz'ing Liquids; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use .the same.

My invention relates to the apparatus for pasteu rizin g liquids, hasespecial reference to treating milk or cream, and consists in certainimprovements which will be fully disclosed in the followingspecification and claims.

In the accompanying drawings, which form part of this specification,Figure I represents a vertical section of my improved apparatus forpasteurizing liquids; Fig. 2, a horizontal section on the line 2 2 onFig. l, and Fig. 3 a front elevation of a cooler.

Reference being had to the drawings and the letters thereon, A indicatesthe receptacle for the liquid to be treated, and B the receptacle forwater to heat the liquid in receptacle A. The two receptacles .areconcentric and are secured to a base-plate or bottom C by soldering tothe annular and concentric flanges a. b, respectively, and thebase-plate is provided with two vertical lugs c c, by Which it issecured tothe frame D by the bolts d d, the lugs resting in recesses ee, as shown in Fig. 1. Within the receptacle A is a dashr E, havingvertical bars f f, whose diameter approximates the internal diameter ofthe receptacle, leaving a narrow space between the cuter edges of thebars and the wall of the receptacle, and extend from the upper end ofthe receptacle to the lower end and terminate in arms g g, which extendinwardly almost to the shaft h, on which the dasher is supported by thehub or collar (i, and from which extend horizontally arms lo 7c, whichare secured to the bars f f 'by rivets Z l. .The shaft his reduced indiameter at its upper end to form a shoulder m, on which the collar irests, and

the shaft is surrounded by a tube n toprevent leakage around the shaftwhere it passes through the bottom C.

The shaft h is supported on a ball-bearing F on the step G in the lowerend of the frame D, and on the shaft is a miter gear-wheel H, whichmeshes with a like gear-wheel-I on shaft K, which is provided withpulleys L M, the former being loose on the shaft and the latter securedthereto by a set-screw o, and the dasher E is secured to the shaft f bya setscrew p.

Each leg of the frame is provided with a fiange N, by which it issecuredto the floor or a proper foundation by bolts q q.

The receptacle A is provided with a detachable, preferably wooden, coverO, secured in position by swinging bolts r and thumb-nuts s, whichengage a ring t on the cover, a supply-pipe P, which connects with thereceptacle at'its lower end and communicates with a receiving-tank Q,which is fed from any suitable source of supply, and a dischargepipe Rat its upper end, which is provided with a thermometer S to indicate thetemperature of the liquid passing through the receptacle A.

The receptacle B is provided with a distributing pipe T, havingperforations u., through which steam is emitted throughout the body ofwater in the receptacle and heats the water therein uniformly as itflows through pipe U, having valve o, from any suitable source ofsupply, and the Waste steam escapes from the receptacle through pipe V,and hot water may be drawn from the receptacle Ithrough faucetW.

`lutions per minute.

ceptacle A to a temperature of from 155 to 175 Fahrenheit and the dasherE set in operation and maintained at a speed of from three hundred andIifty to four hundred revo- The liquid is thus violently agitated orbeaten by the dasher and propelled around the wall of .the receptacle asit rises therein in a thin sheet or stratum and is subjected to the heatof the water in the receptacle B to destroy all deleterious mattercontained in the liquid and discharged at the upper end of thereceptacle through pipe R.

In the treatment of milk or cream care must be taken not to heat it tothe point of sterilization, or the natural taste of the milk or creamwill be sacrificed. The milk or cream is then subjected to a coolingprocess and its temperature reduced from 63 to 53, when it may be runinto vats or receptacles for shipping. Milk or cream thus treatedretains its natural taste and will remain sweet many days without theuse of a refrigerating medinm.

In the treatment of cream I prefer to receive the cream from anyapproved form of separator and run it th rough-the pasteurizer as fastas it flows from the separator.

Having thus fully described my invention, what I claim isl. Apparatusfor pasten rizin g milk orcream, consisting of a cream-receptacle, meansfor agitating or beating the cream and converting it into a thin sheetor stratum, a surrounding water-receptacle, means for heating the water,a base or bottom for said receptacles having annular anges `anddepending lugs; in combination Witha frame supporting the receptaclesand to which said lugs are secured.

2. Apparatus for pasteurizing milk or cream, consisting of acream-receptacle provided with a revoluble dasher approximating thediameter of said receptacle and having inwardly-extending arms at thelower end, a supply-pipe at the lower end of the receptacle,adischargepipe at the upper end thereof, a surrounding water-receptacle,a perforated distributingpipe, and a steam-supply pipe; in combinationwith abase or bottom for said receptacles having annular fiangesou theupper side to which the receptacles are secured, and depending lugs onthefopposite side, a frame having recesses in the upper end thereof andin which said lugs are secured, a dasher-shaft and a driving-shaftsupported by said frame.

3. Apparatus for pasteurizing milk orcream, consisting of acream-receptacle, a dasher for agitating or beating the cream andconverting it into a thin sheet or stratum, asurroundingwater-receptacle, means for heating said Water, a base or bottom forsaid receptacles having annular and concentric Hanges to which saidreceptacles are secured, and depending lugs; in combination with a framesupporting the receptacle and to which said lugs are secured, a shaftsupport-ing the dasher and said shaft supported `at its lower end on astep in said frame, and provided with a miter gear-Wheel, and adriving-shaft connected to the dasher-shaft by a miter gear-wheel andsupported by said frame.

. -In testimony whereof I afiix my signature in-presence of twowitnesses.

DANIEL R.' SN YDER.

Witnesses:

W. A. WANNER, C. M. RICHARDSON,

